The airstrike was carried out in Suzma Qala district of Sar-e-Pul targeting a gathering of the Taliban insurgents.
Provincial governor’s spokesman Zabiullah Amani said the Taliban insurgents had gathered to organize a funeral for the group’s chief Mullah Akhtar Mansoor.
He said at least 6 Taliban insurgents were also wounded during the airstrike which was carried out in Kata Qala village.
The Taliban militants group has not commented regarding the report so far.
Sar-e-Pul is among the relatively volatile provinces in northern Afghanistan where the anti-government armed militant groups are active in a number of its districts and often carry out insurgency activities.
Mullah Mansoor was killed in a drone strike in the vicinity of Balochistan province of Pakistan last Saturday.
Mansoor succeeded Mullah Mohammad Omar in July last year and immediately stepped up insurgency activities across the country under his leadership.
The group elected Mawlavi Haibatulllah Akhundzada as the successor of Mullah Mansoor on Wednesday.